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intelligence

Aristotle
It is the mark of an educated mind to be able to entertain a thought without accepting it.
Bertrand Russell
Most people would sooner die than think; in fact, they do so.
Frank Lloyd Wright
I'm all in favor of keeping dangerous weapons out of the hands of fools. Let's start with typewriters.
Frank Zappa
There is more stupidity than hydrogen in the universe, and it has a longer shelf life.
Georg Lichtenberg
Everyone is a genius at least once a year; a real genius has his original ideas closer together.
Robin Williams
God gave men both a penis and a brain, but unfortunately not enough blood supply to run both at the same time.
Sir Winston Churchill
Any man who is under 30, and is not a liberal, has no heart; and any man who is over 30, and is not a conservative, has no brains.